Riveting device



June' 22 192s. 1,589,851

4 J. B. HAVRILLA RIVETING DEVICE /Vfffm g @i mam r attozmq June 22 192s.1,589,851 .J B. HAVRILLA RIVETING -DEVI CE Filed Feb. '7, 1925' -2Sheets-Sheet 2 gvwentofo Patented June 22, 1926.

JOSEPH B. I-IAVRILLA, OF HOMESTEAD, FENNSYLVANIA.

RIVETING DEVICE.

Mv invention relates to the art of riveting, being more particularly ariveting tool which is'supported and magnetically held against theyplate in such a manner as to take up or cushion the jar of the toolduring the rivet.- Aing'operation. In handling'riveting tools, the 'jaror impact of the tool is communicated directly to the operator to suchan eX- tent that such work is very fatiguing to the operator andeventually results in a disablement of the operator for such work.

Y The principal object of my invention is to produce a riveting deviceof simple form and construction, in which the riveting tool proper ismounted for rotary movement and elastically in a support, which, duringthe riveting operation is magnetically held against the plate uponwhich4 the work is being performed, whereby the jar or impactof the toolis absorbed and not communicated to the operator, and whereby the toolmay be moved relative to the support for properly rounding the rivethead.

Other objects will appear as the nature of the invention is betterunderstood, and the same consists in the novel form, combination andarrangement of parts hereinafter more fully described, shown in theaccompanying drawings and claimed.

In the drawings, wherein like reference characters indicatecorresponding parts throughout the several views,

Figure 1 is a side elevational view of a riveting device constructed inaccordance with. the present invention,

Figure 2 is an enlarged perspective view showing a portion of thesupport for the riveting tool,

, Figure 3 is an end view of Vthe device shown in Figure 2,

Figure 4 is an enlarged transverse section taken. upon the line 4 4 ofFigure 3 with parts omitted, Y Figure 5 is an enlarged sectional viewtaken substantially upon line 5-5 of Figure 1 with parts omitted,

Figure 6 is an enlarged perspective view of the hammer of the rivetingtool with its attached ball member,

Fiure 7 is a fragmentaryA view partly in elevatori and partly inlong'ta'clinal section Application led February 7, 1925. Serial No.7,662'.

showingthe hammer of the riveting tool and adjacent parts, and

Figure 8 is a fragmentary view illustrating the use of a bucking toolwith the rivet.- ing tool. 4

The riveting tool consists of a body 10, a handle 11, and a hammer 12.In the form shown. the tool is of the pneumatic type,` being suppliedwith air under pressure through a flexible connection indicated at 13,such air pressure being controlled as is usually done by a leverindicated at 14.

The riveting tool is supported by a device which embodies a ball member15 that is slidably keyed to the shank of the hammer 12 and isreceivedwithin a socket 16 which has a substantially L-'shapedsupporting arm 17 formed integral with the U-shaped foot 18. ly theemployment of this construction, the riveting tool will be capable of arotary movement within the socket 16 and the same may also be movedlongitudinally relative te the said socket member. The foot 18 ishollowed out or recessed to forma pocket to receive a winding 19 whichis arranged about a core 20, the foot forming an electric magnet for thepurpose hereinafter described.

The supporting arm 17 is hollow as indicated at 21,r and wires 22l and23 extend therethrough from the winding-19 said wires extending througha hollow rod or bar 24 whichis attached as at 25 at its inner end to thetransversely extending arm portion of the arm 17 and which is rigidlyconnected at its outer end with a collar 26 that loosely surrounds thebody 10 of the riveting tool. A switch 27 is carried by the bar or rod24 and properly connected to the wires 22 and 23 so as to control theflow of current to the winding 19, said wires 22 and 23 being eX- tendedthrough the outer end of the rod 24 for connection with a suitablesource of electrical supply.. By reason of the loose relation betweenthe collar 26 and the body 10, the body of the riveting tool may beallowed to move laterally in all directions to alimited extentrelative',i to the said collar but it is obvious that the same resultsmay be obtained by :flexibly 'connecting the ends tf the` ree. the 3.7the CII tion.

lar 26. Surrounding the body 10 and having its end respectively engagingthe collar 26 and a flange 23 upon the inner end of the body 1G, is acoiled or helical compression spring 29. It will thus be seen that byreason of the fact that the hammer shank may slide through the ballmember 15, the impact of the hammer with the rivet will be transmittedto the body 10 and the shock thereof absorbed by the spring 29.

Two plates are shown upon which the work is being performed, said platesbeing indicated at 30 and 31, and the rivet being indicated at 32.

vA l'lucking tool is provided to be held against the plate on theopposite side of the saine to the hammer 12 of the riveting tool.

In the illustration of Figure 8, the support is used for the purpose ofsupporting the bucking tool, it being understood that lt l i e. supportisconstructed as above described in connection with the riveting toolwhen used for supporting the bucking tool. Then thus used, the impactordinarily received by the bucking tool is reduced and absorbed duringthe Aoperation of riveting. The bucking tool is `generally indicated bythe reference character 33.

By forming the electromagnet 18 of U- Vshape asshown so as lto-partiallysurround the `hammer 12 and the rivet 32, only a single felectromagnetstructure need be provided, andthe latterrequires only one supportingarm 17 `for connecting Vthe vsame with the socket member 16.

Wfhen awrivet is tobe headed, the riveting tool is placed inpositionwith the hammer 12 over the rivet and with the foot 1.3 resting'against the plate 31 to be riveted, yas shown in ,Figure 1. The switch27 is then closed-.and the foot becomes magnetized a` sufficient degreetoV hold the support lirmly against the plate during the riveting opera-The air is then admitted to the tool by operation of the lever 1aand theriveting action takes place, the tool being held against the rivet bythe-person operating thev device with the assistance of the spring 29. vs ,hock causedby the impact of the hammer 1 2 isabsorbed to a largeextent by the spring 29, thereby relieving the operator from theforce/of the shock which is ordinarily dil recly received by the personholding the too.

vvWhenV the riveting operation has been iingished, the air is shutoff sothat the riveting vaction vis stopped, and the switch 27 is opened forpermitting the support to be readily detached Afrom the plate and movedY into position for the .next rivet.

yFfrnn the :foregoing description it is believed that theconstructionand operation as well as the advantages of the presentinvention will be readily understood and appreciated by those skilled inthe art.

Minor changes may be made without departing from the spirit or the scopeof this invention as claimed.

VVha-t I claim as new is 1. In an electromagnetic tool' support aU-shaped magnet adapted to contactwith a metallic surface, 'an L-shapedsupporting arm formed integral `with the U-shaped magnet and extendingrearwardly therefrom, a socket formed with the upper end of the arm anddisposed in horizontal alignment with the space between the two legs ofthe. 1nagnet,.a reeiprocable tool movable between the legs of themagnet, a ball member formed thereon and mounted Vin ysaid socket, a barcarried by the L-shaped arm and extending parallel. to the tool, and acollar `formed ywith the outer end ofthe lbar andsupporting part of thetool.

2. A riveting device comprising a substantially -L-shapedsupportingmember having a so'cketat one end, a magnetized foot carried by theopposite end thereof, a riveting tool extending through the said socketand having a Vbajll receivedtherein, a lcollar loosely arranged on theouter end of lsaid riveting tool, connections between the collar and thesaid supporting member, and la coiled spring interposed between saidtool yand said collar.

3. A riveting device arranged tofabsorb shock comprising an L-shapedsupporting member, having a socket at its upper end, a U-shapedfoot-carried by the opposite end of said supporting-member, a coilinf-the foot, meansvfor energizing said coil, a riveting tool extendinglfreely through-the said socket and pivotally Isecured thereina collarloosely arranged on the outer-end of said riveting tool connectionsbetween the collar andv said supporting member, anda coiled springinterposed between said tool and said collar.

t. In combination, ariveting tool having a hammer provided with a shankformed with a ball member anda flange, a supporting member having asocket'for receiving the said ball member, -a foot parallel with thesaid socket member and carried'thereby, a coil in said foota collarloosely surrounding the other end of therivetingtool, a-hollow rodconnecting the collar and the said supportingmember, van expansionspring interposed between said collar, and flange and surrounding thesaid tool, and means for energizing the coil including wires extending Ythrough said hollow rod. y

5. 1n combination, a riveting-tool having a ham-mer provided with ashank, a'ball and socket oint including afball member slidably mountedupon the hammer shank, said ball and `vsocket oint further including a isocket member engaged with the balli member, aU-

.shaped footparallel with the socket inem- Y. ber, a legrigidlyconnecting the socket memand connected to the socket member, an abutmenton the riveting tool7 and a compression spring lnterposed between theabutment and said collar, the connection between the collar and thesocket member embodying a hollow rod having a switch mounted thereon,and the means for energizing the coil including 1U wires extendingthrough said rod and conneoted to the switch.

In testimony whereof I affix my signature.

JOSEPH B. HAVRILLA.

